I don't know how much money Kelp4less pays Google, but it must be bunches because it has been my goto ad on every website my phone has gone to for weeks :-/
You see ads? I never see any ads, or pop-ups, or anything other than the webpage content. Maybe your PC has a malware infection?
Yep, Adblock Plus is your friend. Note it only blocks stuff that uses certain types of code. Whatever is considered "cleanly" coded remains.